SAE-J1705-2007.pdf
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1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefr
2、om, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2007 SAE International All rights reserved. No part of this publication may
3、 be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER:Tel: 877-606-7323 (inside USA and Canada) Tel: 724-776-4970 (outside USA) Fa
4、x: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS:http:/www.sae.org SURFACE VEHICLE RECOMMENDED PRACTICE J1705 NON- CURRENT JUL2007 Issued1985-03 Noncurrent2007-07 Superseding J1705 MAY1995 Low Water Tolerant Brake Fluids 1.ScopeThis SAE Recommended Practice was prepared by the Motor Veh
5、icle Brake Fluids Subcommittee of the SAE Hydraulic Brake Actuating Systems Committee to provide engineers, designers, and manufacturers of motor vehicles with a set of minimum performance standards in order to assess the suitability of silicone and other low water tolerant type brake fluids (LWTF)
6、for use in motor vehicle brake systems. These fluids are designed for use in braking systems fitted with rubber cups and seals made from natural rubber (NR), styrene- butadiene rubber (SBR), or a terpolymer of ethylene, propylene, and a diene (EPDM). In the development of the recommended requirement
7、s and test procedures contained herein, it is concluded that the LWTFs must be functionally compatible with existing motor vehicle brake fluids conforming to SAE J1703 and with braking systems designed for such fluids. To utilize LWTFs to the fullest advantage, they should not be mixed with other br
8、ake fluids. Inadvertent mixtures of LWTFs with fluids meeting SAE J1703 are not known to have any adverse effects on performance, but all combinations have not been tested. Vehicle manufacturers recommendations should be followed where indicated. These fluids are not necessarily suitable for use in
9、central hydraulic or pumped systems and are not intended for use below temperatures of 50 C (58 F). Brake fluids covered under this document are not required to tolerate water and extreme caution should be exercised to prevent accidental entry of water which might lead to brake failure. Other perfor
10、mance characteristics of these LWTFs not covered in this document are discussed in Appendix A. 1.1RationaleThis document has been found to be Noncurrent, therefore, it may be in use by some areas of industry but is not the most up-to-date technical information. 2.References 2.1Applicable Publication
11、sThe following publications form a part of the specification to the extent specified herein. Unless otherwise indicated the latest revision of SAE publications shall apply. 2.1.1SAE PUBLICATIONAvailable from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001. SAE J1703Motor Vehicle Brake Fluid S
12、AE J1705 NONCURRENT JUL2007 -2- 2.1.2ASTM PUBLICATIONSAvailable from ASTM, 1916 Race Street, Philadelphia, PA 19103-1187. ASTM D 91Test Method for Precipitation Number of Lubricating Oils ASTM D 445Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and the Calculation of Dynamic
13、Viscosity) ASTM D 1120Test Method for Boiling Point of Engine Coolants ASTM D 1415Test Method for Rubber PropertyInternational Hardness ASTM D 2240Test Method for Rubber PropertyDurometer Hardness ASTM E 1Specification for ASTM Thermometers ASTM E 145Specification for Gravity Convection and Forced-V
14、entilation Ovens ASTM E 203Test Method for Water Using Karl Fischer Reagent 2.1.3FEDERAL SPECIFICATIONAvailable from Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402. FMVSS 116Motor Vehicle Brake Fluids 2.1.4MILITARY SPECIFICATIONAvailable from DODSSP, Subscription
15、Services Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094. MIL-B-46176 2.2Other Publications USAMERDC Report 2132 AD A-12849 - Feb. 1975 USAMERDC Report 21264 AD-02618 - Jan. 1976 J. A. Tichy and W. O. Winer, “A Correlation of Bulk Moduli and P-V-T Data for Silicone Fluids at Press
16、ure up to 500,000 PSIF,“ ASLE Transactions 11,338 - 344 (1968) 3.Requirements 3.1Equilibrium Reflux Boiling Point (ERBP) 3.1.1When tested by the procedure specified in 4.1, the low water tolerant brake fluid shall have an ERBP of not less than 260 C (500 F). 3.1.2When tested by the procedure specifi
17、ed in 4.1.1, the low water tolerant brake fluid shall have a wet ERBP of not less than 180 C (356 F). 3.2ViscosityWhen tested by the procedure specified in 4.2, LWTFs shall have kinematic viscosities as follows: 3.2.1AT 40 C (40 F)Not more than 900 mm2/s (900 cSt). 3.2.2AT 25 C (77 F)Not more than 5
18、0 mm2/s (50 cSt). 3.2.3AT 100 C (212 F)Not less than 1.5 mm2/s (1.5 cSt). 3.3CorrosionLWTFs, when tested by the procedure specified in 4.3, shall not cause corrosion exceeding the limits shown in Table 1. The metal strips outside the area of contact shall be neither pitted nor roughened to an extent
19、 discernible by the eye without magnification, but staining or discoloration is permitted. Roughening caused during assembly and disassembly shall be disregarded. -,-,- SAE J1705 NONCURRENT JUL2007 -3- The fluid at the end of the test shall show no gelling at 23 C 5 C (73 F 9 F). No crystalline type
20、 deposit shall form and adhere to either the glass jar walls or the surface of metal strips. The fluid shall contain no more than 0.10% sediment by volume. The rubber cup at the end of the test shall show no appreciable disintegration as evidenced by blisters or sloughing as indicated by carbon blac
21、k separation on the surface of the rubber cup. The hardness of the rubber cup shall not decrease by more than 15 International Rubber Hardness degrees (IRHD) and the base diameter shall not increase by more than 1.40 mm (0.055 in). 3.4Fluidity and Appearance at Low Temperature 3.4.1AT 40 C (40 F)Whe
22、n LWTFs are tested by the procedure specified in 4.4(a), the fluid shall show no stratification, sediment, or crystals. Upon inversion of the sample bottle, the air bubble shall travel to the top of the fluid in not more than 10 s. Cloudiness is permissible, but on warming to room temperature 23 C 5
23、 C (73 F 9 F), the fluid shall regain its original uniformity, appearance, and clarity. 3.4.2AT 50 C (58 F)When LWTFs are tested by the procedure specified in 4.4(b), the fluid shall show no stratification, sediment, or crystals. Upon inversion of the sample bottle, the air bubble shall travel to th
24、e top of the fluid in not more than 35 s. Cloudiness is permissible, but on warming to room temperature 23 C 5 C (73 F 9 F), the fluid shall regain its original uniformity, appearance, and clarity. 3.5Tolerance to High Humidity 3.5.1AT 40 C (40 F)When LWTFs are tested by the procedure specified in 4
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